Intercept and edit HTTP/HTTPS requests and responses as they happen without the need of a proxy.
Users
10K
0 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
2
0 in 30 days
Store rank
#9,831
#8,500 among extensions
Version
2
updated 11 Nov 2025
Users
monthly, 11 months
Latest, 15 Oct 2026:10,000 usersMove the mouse over the chart for any month
Ratings count
monthly, 11 months
Latest, 15 Oct 2026:2 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Tamper Dev
Bringing back the good old tamper.dev plugin from Google which is currently unusable as it has not been maintained for about 5 years now. Fully upgraded and works with a minimal set of features that meets the MVP standard and conforms to Manifest V3. Enjoy and feel free to open support requests for updates! Stay tuned for more updates like Hex Editor in the future!
Intercept and edit HTTP/HTTPS requests and responses as they happen without the need of a proxy.
If you are a developer, you can use Tamper Dev to debug your websites, or if you are a pentester, you can use it to search for security vulnerabilities by inspecting the HTTP traffic from your browser.
Unlike most other extensions, Tamper Dev allows you to intercept, inspect and modify the requests before they are sent to the server, and before they are sent back to the browser interactively, and without any additional installed software.
How to use?
1. Press [ Alt ⌥ ] + [ T ] or click on the extension button
2. Filter the requests you are interested in
3. Enable interception, and trigger a new request
4. Modify all requests before they are sent to the server
5. Modify the responses before they are sent back to the browser
Growth
Window
Users
Change
Ratings
Rating
7 days
0
+0.0%
0
0.00
30 days
0
+0.0%
0
0.00
6 months
+8,000
+400.0%
0
0.00
Chrome Web Store search rankings
Where Tamper Dev appears when people search the store, with the 30 day change